Hola! As a New Yorker, I'd advise Laguardia. They did a really good job renovating recently and it's a far nicer airport than it used to be. I'd suggest getting a yellow cab at the airport if you have any kind of luggage (yellow cab will be cheaper than Uber or Lyft).
Public transit is $2.90 per person if you opt for that, and you can use apple pay or any chip card. Take the M60 bus to 106th Street and Broadway, get on the 1 subway southbound and exit at 50th Street. The terminal is about a six (long) block walk from there. Hence why I advise a cab from the airport. 🙂